One of agriculture methods for reaching to stable sugarcane farms, keep soil structure against influential stresses. These stresses can be induced by the movement of agriculture machines (harvesting and traort sugar cane machines) or by wet and dry processes. Soil compression considered as the most important factor that destroys physical fertility of soil. Add plant residue to the soil, can improve soil structure and water retention in the soil. Nowadays by increasing of farms areas, improving of heavy agriculture machines and increasing of work capacity of them for decreasing of production coast per hectare, soil compaction risk has been increased. Soil type and climatic characteristics of sugarcane region in Khuzestan province in comparison with other global regions are different. By taking into account the large areas of sugarcane farms, weak soil structure and high compaction of them, add planet residue and increasing of organic material of sugarcane farms is very important. Therefore the goal of this research is, Impact of additives (shredded leaves and tops of cane stalk, their biochar and ash) with different amounts of weight percent (1 and 2%) of two texturally – different soils (clay and sandy loam) of surface layer (0 to 20 centimeter of Lavark and Tiran farms) and with two moisture levels (0.8PL and 1.1PL) (PL= Plastic Limit) on engineering properties (SL=Shrinking limit, PL= Plastic limit, LL= Liquid limit, PI=Plastic Index and FI=Friability Index ) and shear strength parameters. Changing of soil moisture content causes internal stresses in the soil. Internal stress changes physical structure of the soil. This change in moisture content was determined by soil engineering properties (Atterberg limits). So that engineering properties were determined as following: shrinking limit by special mold, plastic limit by rolling and penetration cone method, liquid limit by Casagrande cup method. Soil failure considered as shear failure and the maximum shear stress at failure time, called shear strength. The amount of organic material in soil affects on shear strength parameters. Shear strength parameters (Cohesion (C) and internal friction angle (?)) were determined depending on direct shear test. Interactions of mean factors on engineering properties and shear strength parameters were assessed depending on Factorial experiment in a completely randomized design for three replications. The comparison between treated soil with additives and control was evaluated depending on completely randomized design. The Results of clay loam soil treated with additives indicated that, friability index for 2% biochar has been significantly increased to 61.2% compared to control. For sandy loam soil treated with additives, friability index for (1 or 2)% biochar has been significantly increased to 25% compared to control. By increasing of clay percent from 13.3% (sandy loam) to 30% (clay loam), adding (2%) of shredded planet residue and increasing of moisture content from 0.8PL to 1.1PL; cohesion parameter of soil has been significantly increased to 32.8, 45.5, 15 and 85%. By decreasing of clay percent from 30% (clay loam) to 13.3% (sandy loam), adding (2%) of additives and decreasing of moisture content from 1.1PL to 0.8PL; internal friction angle parameter of soil has been significantly increased to 30.5, 8.4 and 23.6%. Internal friction angle was not affected by additives. The comparison between treated clay loam with additives and control for moisture content (0.8PL) indicated that by adding (1% or 2%) of additives to soil; shear strength parameters (C and ?) have been decreased. The comparison between treated clay loam with additives and control for moisture content (1.1PL) indicated that by adding (1% or 2%) of additives to soil; cohesion parameter has been increased and internal friction angle has been decreased. The comparison between treated sandy loam with additives and control for moisture content (0.8PL and 1.1PL) indicated that by adding (1% or 2%) of additives to soil; cohesion parameter has been increased and internal friction angle has been decreased. Hence, for managing soil structure which has been treated with additives (shredded leaves and tops of cane stalk, their biochar and ash), it is recommended after adding of additives, soil is given sufficient time to find suitable changes in soil structure. Keywords: Engineering properties, Plastic limit, Plastic Index, Friability Index, Shear strength, Cohesion, Internal friction angle.